+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Low-level board setup code for TI DaVinci SoC based boards.
- *
- * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
- *
- * Partially based on TI sources, original copyrights follow:
- */
-
-/*
- * Board specific setup info
- *
- * (C) Copyright 2003
- * Texas Instruments, <www.ti.com>
- * Kshitij Gupta <Kshitij@ti.com>
- *
- * Modified for OMAP 1610 H2 board by Nishant Kamat, Jan 2004
- *
- * Modified for OMAP 5912 OSK board by Rishi Bhattacharya, Apr 2004
- *
- * Modified for DV-EVM board by Rishi Bhattacharya, Apr 2005
- *
- * Modified for DV-EVM board by Swaminathan S, Nov 2005
- */
-
-#include <config.h>
-
-#define MDSTAT_STATE 0x3f
-
-.globl lowlevel_init
-lowlevel_init:
-#ifdef CONFIG_SOC_DM644X
-
- /*-------------------------------------------------------*
- * Mask all IRQs by setting all bits in the EINT default *
- *-------------------------------------------------------*/
- mov r1, $0
- ldr r0, =EINT_ENABLE0
- str r1, [r0]
- ldr r0, =EINT_ENABLE1
- str r1, [r0]
-
- /*------------------------------------------------------*
- * Put the GEM in reset *
- *------------------------------------------------------*/
-
- /* Put the GEM in reset */
- ldr r8, PSC_GEM_FLAG_CLEAR
- ldr r6, MDCTL_GEM
- ldr r7, [r6]
- and r7, r7, r8
- str r7, [r6]
-
- /* Enable the Power Domain Transition Command */
- ldr r6, PTCMD
- ldr r7, [r6]
- orr r7, r7, $0x02
- str r7, [r6]
-
- /* Check for Transition Complete(PTSTAT) */
-checkStatClkStopGem:
- ldr r6, PTSTAT
- ldr r7, [r6]
- ands r7, r7, $0x02
- bne checkStatClkStopGem
-
- /* Check for GEM Reset Completion */
-checkGemStatClkStop:
- ldr r6, MDSTAT_GEM
- ldr r7, [r6]
- ands r7, r7, $0x100
- bne checkGemStatClkStop
-
- /* Do this for enabling a WDT initiated reset this is a workaround
- for a chip bug. Not required under normal situations */
- ldr r6, P1394
- mov r10, $0
- str r10, [r6]
-
- /*------------------------------------------------------*
- * Enable L1 & L2 Memories in Fast mode *
- *------------------------------------------------------*/
- ldr r6, DFT_ENABLE
- mov r10, $0x01
- str r10, [r6]
-
- ldr r6, MMARG_BRF0
- ldr r10, MMARG_BRF0_VAL
- str r10, [r6]
-
- ldr r6, DFT_ENABLE
- mov r10, $0
- str r10, [r6]
-
- /*------------------------------------------------------*
- * DDR2 PLL Initialization *
- *------------------------------------------------------*/
-
- /* Select the Clock Mode Depending on the Value written in the Boot Table by the run script */
- mov r10, $0
- ldr r6, PLL2_CTL
- ldr r7, PLL_CLKSRC_MASK
- ldr r8, [r6]
- and r8, r8, r7
- mov r9, r10, lsl $8
- orr r8, r8, r9
- str r8, [r6]
-
- /* Select the PLLEN source */
- ldr r7, PLL_ENSRC_MASK
- and r8, r8, r7
- str r8, [r6]
-
- /* Bypass the PLL */
- ldr r7, PLL_BYPASS_MASK
- and r8, r8, r7
- str r8, [r6]
-
- /* Wait for few cycles to allow PLLEN Mux switch properly to bypass Clock */
- mov r10, $0x20
-WaitPPL2Loop:
- subs r10, r10, $1
- bne WaitPPL2Loop
-
- /* Reset the PLL */
- ldr r7, PLL_RESET_MASK
- and r8, r8, r7
- str r8, [r6]
-
- /* Power up the PLL */
- ldr r7, PLL_PWRUP_MASK
- and r8, r8, r7
- str r8, [r6]
-
- /* Enable the PLL from Disable Mode */
- ldr r7, PLL_DISABLE_ENABLE_MASK
- and r8, r8, r7
- str r8, [r6]
-
- /* Program the PLL Multiplier */
- ldr r6, PLL2_PLLM
- mov r2, $0x17 /* 162 MHz */
- str r2, [r6]
-
- /* Program the PLL2 Divisor Value */
- ldr r6, PLL2_DIV2
- mov r3, $0x01
- str r3, [r6]
-
- /* Program the PLL2 Divisor Value */
- ldr r6, PLL2_DIV1
- mov r4, $0x0b /* 54 MHz */
- str r4, [r6]
-
- /* PLL2 DIV2 MMR */
- ldr r8, PLL2_DIV_MASK
- ldr r6, PLL2_DIV2
- ldr r9, [r6]
- and r8, r8, r9
- mov r9, $0x01
- mov r9, r9, lsl $15
- orr r8, r8, r9
- str r8, [r6]
-
- /* Program the GOSET bit to take new divider values */
- ldr r6, PLL2_PLLCMD
- ldr r7, [r6]
- orr r7, r7, $0x01
- str r7, [r6]
-
- /* Wait for Done */
- ldr r6, PLL2_PLLSTAT
-doneLoop_0:
- ldr r7, [r6]
- ands r7, r7, $0x01
- bne doneLoop_0
-
- /* PLL2 DIV1 MMR */
- ldr r8, PLL2_DIV_MASK
- ldr r6, PLL2_DIV1
- ldr r9, [r6]
- and r8, r8, r9
- mov r9, $0x01
- mov r9, r9, lsl $15
- orr r8, r8, r9
- str r8, [r6]
-
- /* Program the GOSET bit to take new divider values */
- ldr r6, PLL2_PLLCMD
- ldr r7, [r6]
- orr r7, r7, $0x01
- str r7, [r6]
-
- /* Wait for Done */
- ldr r6, PLL2_PLLSTAT
-doneLoop:
- ldr r7, [r6]
- ands r7, r7, $0x01
- bne doneLoop
-
- /* Wait for PLL to Reset Properly */
- mov r10, $0x218
-ResetPPL2Loop:
- subs r10, r10, $1
- bne ResetPPL2Loop
-
- /* Bring PLL out of Reset */
- ldr r6, PLL2_CTL
- ldr r8, [r6]
- orr r8, r8, $0x08
- str r8, [r6]
-
- /* Wait for PLL to Lock */
- ldr r10, PLL_LOCK_COUNT
-PLL2Lock:
- subs r10, r10, $1
- bne PLL2Lock
-
- /* Enable the PLL */
- ldr r6, PLL2_CTL
- ldr r8, [r6]
- orr r8, r8, $0x01
- str r8, [r6]
-
- /*------------------------------------------------------*
- * Issue Soft Reset to DDR Module *
- *------------------------------------------------------*/
-
- /* Shut down the DDR2 LPSC Module */
- ldr r8, PSC_FLAG_CLEAR
- ldr r6, MDCTL_DDR2
- ldr r7, [r6]
- and r7, r7, r8
- orr r7, r7, $0x03
- str r7, [r6]
-
- /* Enable the Power Domain Transition Command */
- ldr r6, PTCMD
- ldr r7, [r6]
- orr r7, r7, $0x01
- str r7, [r6]
-
- /* Check for Transition Complete(PTSTAT) */
-checkStatClkStop:
- ldr r6, PTSTAT
- ldr r7, [r6]
- ands r7, r7, $0x01
- bne checkStatClkStop
-
- /* Check for DDR2 Controller Enable Completion */
-checkDDRStatClkStop:
- ldr r6, MDSTAT_DDR2
- ldr r7, [r6]
- and r7, r7, $MDSTAT_STATE
- cmp r7, $0x03
- bne checkDDRStatClkStop
-
- /*------------------------------------------------------*
- * Program DDR2 MMRs for 162MHz Setting *
- *------------------------------------------------------*/
-
- /* Program PHY Control Register */
- ldr r6, DDRCTL
- ldr r7, DDRCTL_VAL
- str r7, [r6]
-
- /* Program SDRAM Bank Config Register */
- ldr r6, SDCFG
- ldr r7, SDCFG_VAL
- str r7, [r6]
-
- /* Program SDRAM TIM-0 Config Register */
- ldr r6, SDTIM0
- ldr r7, SDTIM0_VAL_162MHz
- str r7, [r6]
-
- /* Program SDRAM TIM-1 Config Register */
- ldr r6, SDTIM1
- ldr r7, SDTIM1_VAL_162MHz
- str r7, [r6]
-
- /* Program the SDRAM Bank Config Control Register */
- ldr r10, MASK_VAL
- ldr r8, SDCFG
- ldr r9, SDCFG_VAL
- and r9, r9, r10
- str r9, [r8]
-
- /* Program SDRAM SDREF Config Register */
- ldr r6, SDREF
- ldr r7, SDREF_VAL
- str r7, [r6]
-
- /*------------------------------------------------------*
- * Issue Soft Reset to DDR Module *
- *------------------------------------------------------*/
-
- /* Issue a Dummy DDR2 read/write */
- ldr r8, DDR2_START_ADDR
- ldr r7, DUMMY_VAL
- str r7, [r8]
- ldr r7, [r8]
-
- /* Shut down the DDR2 LPSC Module */
- ldr r8, PSC_FLAG_CLEAR
- ldr r6, MDCTL_DDR2
- ldr r7, [r6]
- and r7, r7, r8
- orr r7, r7, $0x01
- str r7, [r6]
-
- /* Enable the Power Domain Transition Command */
- ldr r6, PTCMD
- ldr r7, [r6]
- orr r7, r7, $0x01
- str r7, [r6]
-
- /* Check for Transition Complete(PTSTAT) */
-checkStatClkStop2:
- ldr r6, PTSTAT
- ldr r7, [r6]
- ands r7, r7, $0x01
- bne checkStatClkStop2
-
- /* Check for DDR2 Controller Enable Completion */
-checkDDRStatClkStop2:
- ldr r6, MDSTAT_DDR2
- ldr r7, [r6]
- and r7, r7, $MDSTAT_STATE
- cmp r7, $0x01
- bne checkDDRStatClkStop2
-
- /*------------------------------------------------------*
- * Turn DDR2 Controller Clocks On *
- *------------------------------------------------------*/
-
- /* Enable the DDR2 LPSC Module */
- ldr r6, MDCTL_DDR2
- ldr r7, [r6]
- orr r7, r7, $0x03
- str r7, [r6]
-
- /* Enable the Power Domain Transition Command */
- ldr r6, PTCMD
- ldr r7, [r6]
- orr r7, r7, $0x01
- str r7, [r6]
-
- /* Check for Transition Complete(PTSTAT) */
-checkStatClkEn2:
- ldr r6, PTSTAT
- ldr r7, [r6]
- ands r7, r7, $0x01
- bne checkStatClkEn2
-
- /* Check for DDR2 Controller Enable Completion */
-checkDDRStatClkEn2:
- ldr r6, MDSTAT_DDR2
- ldr r7, [r6]
- and r7, r7, $MDSTAT_STATE
- cmp r7, $0x03
- bne checkDDRStatClkEn2
-
- /* DDR Writes and Reads */
- ldr r6, CFGTEST
- mov r3, $0x01
- str r3, [r6]
-
- /*------------------------------------------------------*
- * System PLL Initialization *
- *------------------------------------------------------*/
-
- /* Select the Clock Mode Depending on the Value written in the Boot Table by the run script */
- mov r2, $0
- ldr r6, PLL1_CTL
- ldr r7, PLL_CLKSRC_MASK
- ldr r8, [r6]
- and r8, r8, r7
- mov r9, r2, lsl $8
- orr r8, r8, r9
- str r8, [r6]
-
- /* Select the PLLEN source */
- ldr r7, PLL_ENSRC_MASK
- and r8, r8, r7
- str r8, [r6]
-
- /* Bypass the PLL */
- ldr r7, PLL_BYPASS_MASK
- and r8, r8, r7
- str r8, [r6]
-
- /* Wait for few cycles to allow PLLEN Mux switch properly to bypass Clock */
- mov r10, $0x20
-
-WaitLoop:
- subs r10, r10, $1
- bne WaitLoop
-
- /* Reset the PLL */
- ldr r7, PLL_RESET_MASK
- and r8, r8, r7
- str r8, [r6]
-
- /* Disable the PLL */
- orr r8, r8, $0x10
- str r8, [r6]
-
- /* Power up the PLL */
- ldr r7, PLL_PWRUP_MASK
- and r8, r8, r7
- str r8, [r6]
-
- /* Enable the PLL from Disable Mode */
- ldr r7, PLL_DISABLE_ENABLE_MASK
- and r8, r8, r7
- str r8, [r6]
-
- /* Program the PLL Multiplier */
- ldr r6, PLL1_PLLM
- mov r3, $0x15 /* For 594MHz */
- str r3, [r6]
-
- /* Wait for PLL to Reset Properly */
- mov r10, $0xff
-
-ResetLoop:
- subs r10, r10, $1
- bne ResetLoop
-
- /* Bring PLL out of Reset */
- ldr r6, PLL1_CTL
- orr r8, r8, $0x08
- str r8, [r6]
-
- /* Wait for PLL to Lock */
- ldr r10, PLL_LOCK_COUNT
-
-PLL1Lock:
- subs r10, r10, $1
- bne PLL1Lock
-
- /* Enable the PLL */
- orr r8, r8, $0x01
- str r8, [r6]
-
- nop
- nop
- nop
- nop
-
- /*------------------------------------------------------*
- * AEMIF configuration for NOR Flash (double check) *
- *------------------------------------------------------*/
- ldr r0, _PINMUX0
- ldr r1, _DEV_SETTING
- str r1, [r0]
-
- ldr r0, WAITCFG
- ldr r1, WAITCFG_VAL
- ldr r2, [r0]
- orr r2, r2, r1
- str r2, [r0]
-
- ldr r0, ACFG3
- ldr r1, ACFG3_VAL
- ldr r2, [r0]
- and r1, r2, r1
- str r1, [r0]
-
- ldr r0, ACFG4
- ldr r1, ACFG4_VAL
- ldr r2, [r0]
- and r1, r2, r1
- str r1, [r0]
-
- ldr r0, ACFG5
- ldr r1, ACFG5_VAL
- ldr r2, [r0]
- and r1, r2, r1
- str r1, [r0]
-
- /*--------------------------------------*
- * VTP manual Calibration *
- *--------------------------------------*/
- ldr r0, VTPIOCR
- ldr r1, VTP_MMR0
- str r1, [r0]
-
- ldr r0, VTPIOCR
- ldr r1, VTP_MMR1
- str r1, [r0]
-
- /* Wait for 33 VTP CLK cycles. VRP operates at 27 MHz */
- ldr r10, VTP_LOCK_COUNT
-VTPLock:
- subs r10, r10, $1
- bne VTPLock
-
- ldr r6, DFT_ENABLE
- mov r10, $0x01
- str r10, [r6]
-
- ldr r6, DDRVTPR
- ldr r7, [r6]
- mov r8, r7, LSL #32-10
- mov r8, r8, LSR #32-10 /* grab low 10 bits */
- ldr r7, VTP_RECAL
- orr r8, r7, r8
- ldr r7, VTP_EN
- orr r8, r7, r8
- str r8, [r0]
-
-
- /* Wait for 33 VTP CLK cycles. VRP operates at 27 MHz */
- ldr r10, VTP_LOCK_COUNT
-VTP1Lock:
- subs r10, r10, $1
- bne VTP1Lock
-
- ldr r1, [r0]
- ldr r2, VTP_MASK
- and r2, r1, r2
- str r2, [r0]
-
- ldr r6, DFT_ENABLE
- mov r10, $0
- str r10, [r6]
-
- /*
- * Call board-specific lowlevel init.
- * That MUST be present and THAT returns
- * back to arch calling code with "mov pc, lr."
- */
- b dv_board_init
-
-.ltorg
-
-_PINMUX0:
- .word 0x01c40000 /* Device Configuration Registers */
-_PINMUX1:
- .word 0x01c40004 /* Device Configuration Registers */
-
-_DEV_SETTING:
- .word 0x00000c1f
-
-WAITCFG:
- .word 0x01e00004
-WAITCFG_VAL:
- .word 0
-ACFG3:
- .word 0x01e00014
-ACFG3_VAL:
- .word 0x3ffffffd
-ACFG4:
- .word 0x01e00018
-ACFG4_VAL:
- .word 0x3ffffffd
-ACFG5:
- .word 0x01e0001c
-ACFG5_VAL:
- .word 0x3ffffffd
-
-MDCTL_DDR2:
- .word 0x01c41a34
-MDSTAT_DDR2:
- .word 0x01c41834
-
-PTCMD:
- .word 0x01c41120
-PTSTAT:
- .word 0x01c41128
-
-EINT_ENABLE0:
- .word 0x01c48018
-EINT_ENABLE1:
- .word 0x01c4801c
-
-PSC_FLAG_CLEAR:
- .word 0xffffffe0
-PSC_GEM_FLAG_CLEAR:
- .word 0xfffffeff
-
-/* DDR2 MMR & CONFIGURATION VALUES, 162 MHZ clock */
-DDRCTL:
- .word 0x200000e4
-DDRCTL_VAL:
- .word 0x50006405
-SDREF:
- .word 0x2000000c
-SDREF_VAL:
- .word 0x000005c3
-SDCFG:
- .word 0x20000008
-SDCFG_VAL:
-#ifdef DDR_4BANKS
- .word 0x00178622
-#elif defined DDR_8BANKS
- .word 0x00178632
-#else
-#error "Unknown DDR configuration!!!"
-#endif
-SDTIM0:
- .word 0x20000010
-SDTIM0_VAL_162MHz:
- .word 0x28923211
-SDTIM1:
- .word 0x20000014
-SDTIM1_VAL_162MHz:
- .word 0x0016c722
-VTPIOCR:
- .word 0x200000f0 /* VTP IO Control register */
-DDRVTPR:
- .word 0x01c42030 /* DDR VPTR MMR */
-VTP_MMR0:
- .word 0x201f
-VTP_MMR1:
- .word 0xa01f
-DFT_ENABLE:
- .word 0x01c4004c
-VTP_LOCK_COUNT:
- .word 0x5b0
-VTP_MASK:
- .word 0xffffdfff
-VTP_RECAL:
- .word 0x08000
-VTP_EN:
- .word 0x02000
-CFGTEST:
- .word 0x80010000
-MASK_VAL:
- .word 0x00000fff
-
-/* GEM Power Up & LPSC Control Register */
-MDCTL_GEM:
- .word 0x01c41a9c
-MDSTAT_GEM:
- .word 0x01c4189c
-
-/* For WDT reset chip bug */
-P1394:
- .word 0x01c41a20
-
-PLL_CLKSRC_MASK:
- .word 0xfffffeff /* Mask the Clock Mode bit */
-PLL_ENSRC_MASK:
- .word 0xffffffdf /* Select the PLLEN source */
-PLL_BYPASS_MASK:
- .word 0xfffffffe /* Put the PLL in BYPASS */
-PLL_RESET_MASK:
- .word 0xfffffff7 /* Put the PLL in Reset Mode */
-PLL_PWRUP_MASK:
- .word 0xfffffffd /* PLL Power up Mask Bit */
-PLL_DISABLE_ENABLE_MASK:
- .word 0xffffffef /* Enable the PLL from Disable */
-PLL_LOCK_COUNT:
- .word 0x2000
-
-/* PLL1-SYSTEM PLL MMRs */
-PLL1_CTL:
- .word 0x01c40900
-PLL1_PLLM:
- .word 0x01c40910
-
-/* PLL2-SYSTEM PLL MMRs */
-PLL2_CTL:
- .word 0x01c40d00
-PLL2_PLLM:
- .word 0x01c40d10
-PLL2_DIV1:
- .word 0x01c40d18
-PLL2_DIV2:
- .word 0x01c40d1c
-PLL2_PLLCMD:
- .word 0x01c40d38
-PLL2_PLLSTAT:
- .word 0x01c40d3c
-PLL2_DIV_MASK:
- .word 0xffff7fff
-
-MMARG_BRF0:
- .word 0x01c42010 /* BRF margin mode 0 (R/W)*/
-MMARG_BRF0_VAL:
- .word 0x00444400
-
-DDR2_START_ADDR:
- .word 0x80000000
-DUMMY_VAL:
- .word 0xa55aa55a
-#else /* CONFIG_SOC_DM644X */
- mov pc, lr
-#endif
projects / oweals / u-boot.git / commitdiff